Crane



Aug. '23, 1932.

N. P. LARSEN 1,873,433

CRANE Filed Sept. 18, 1930 Patented Aug. 23', 1932 UNITED A STATESPATENT OFFICE- NEIL I?. LARSEN, OF CLEVELAND, OHIO, ASSIGNOR '.lO THEAMERICAN COACH @a BODY COMPANY, 0F CLEVELAND, OHIO, A CORPORATION OFOHIO CRANE Application mea septemter '18, 1930.- seriai No. 482,733.

utilities companies in the erection of poles and the like.

An object of the present invention is to provide a boom adapted to beremovably attached to the front end of the chassis o'f a motor vehicleso that the work of erecting poles and like devices, may be observed bythe driver while sitting in a normal position within the cab of themotor vehicle.

A further object of the present invention is to provide means fordirectly receiving the load suspended from the boom and thus avoidsubjecting the springs of the motor vehicle to the load.

With the objects above indicated and other objects hereinafter explainedin view, the invention consists in the construction and combination ofelements hereinafter described and claimed.

Referring to the drawing:

Figure 1 is perspective view of a motor vehicle showing the location ofthe boom embodying the present invention and the method of attachment.

Fig. 2 is a front elevational view of the means for receiving the loadsuspended from the boom.

Fig. 3 is a side elevational View of Fig. 2.

A standard type of motor vehicle 10 is illustrated in Fig. 1 and ischaracteristic of the type of motor vehicle used by the utilitiescompanies in their erection and repair work. The vehicle is providedwith the usual chassis 11 which has secured to the forward end thereofthe boom which will be later dedescribed in more detail.

A pair of brackets 12 are spaced apart as Y shown in Figs. 1 and 2 andare bolted or otherwise secured at 13 to the forward ends hook ends16'of the boom 17. It will be noted that these hook ends 16 aredetachably connected with the opposite ends of the transverse rod 14 sothat the boom maybe disengaged from the front end of the motor vehiclewhen not in use. The boom in the present instance consists of a pair ofrods 18 which converge toward their upper ends and arepivotallyconnected at 19 to the upper end'of a guy 20. l

This guy 20 comprises telescopic portion 21 and 22 which may be securedin any desired position by a locking pin 23 which is adapted to passthrough suitable aligned openings in both of the telescopic portions.This guy 20 is made adjustable so as to position the' boom 17 at thedesired height and to maintain the same in the adjusted position.

The lower end of the guy 20 fits within a socket 24 which has its lowerends bifurcated at 25 and provided with aligned' openings through whicha rod 26 extends. Between the bifurcated ends 25 of the socket 24 andalso encircling the rod 26 is a sheave 27 for a purpose to be laterdescribed.

The ends of the rod 26 are secured by welding or otherwise to the upperends of a pair of brackets 28 which in turn are suitably bolted orotherwise secured to a portion of the motor vehicle adjacent the topthereof as clearly shown. in-Fig. 1.

At the rear portion of the motor vehicle a rod 29 is secured at its endsto the inotorvehicle and mounted for rotation upon the rod 29 isa'sheave 30.

The guy 20 has secured thereto a sheave 31 adjacent its lower end whilea sheave 32 is carriedy by the upper end of the guy 20 and adapted torotate about the axis of the pin 19. A cable 33 has a hook 34 atvone endthereof and extendsy over the sheave 32 under the sheave 31 over thesheave 30 and has t' i n chicle to excessive strain and it is,"therefore, advisable to provide a means for receiving the load and thusrelieving the springs of any possibility of injury on this account.However, in providing Y such means it is essential that the motorvehicle shall still remain in operative condition so as to be moved fromone pole, 'which has been erected, to the 'next pole which is to beerected, during which time the load may be suspended from the. boom. i.i rA pair of tubularmembers 35 are positioned vertically and are weldedor otherwise secured to the forward portions of the brackets 12. Thesetubular members 35 extend forwardly beyond the forward end of thechassis 11 and slidably receive therein members 36. These members 36 arevertically adjustable, or longitudinally adjustable within the tubularmembers 35, and are provided with aligned openings within whichare-disposed pins 37 for maintaining these members 36 in the desiredadjusted positions. The lower ends of the members 36 have bifurcatedends 38 to receive therebetween rollers or wheels 39 which are rotatablymounted upon transversely extending pins 40 carried by the bifurcatedends 38.

It will therefore be seen that when in operation the members 36 arelowered until the l rollers 39 engage the ground ahead of the motorvehicle and the pins 37 inserted through the aligned openings in themembers 36 and the tubular members 35 to hold these members in properposition. In view -of the fact that the tubular members 35 are directlyconnected within brackets 12 which support the boom 17 the load istherefore vsupported directly upon the ground and through the rollers39, thus eliminating any unnecessary force being carried by the springsof the motor vehicle.

Themotor vehicle may be operated and may travel over a given distanceduring the erection of poles or the like while the rollers 39 are inengagement with the ground, thus providing a support for the boom whichwillinot interfere with the manipulation of the motor vehicle. Afurtheradvantage in the arrangement is that the operator may see the erectionoperations and at the same time move the motor vehicle so as totransport the pole or other article to the proper destination.

When the boom -is not in use it may be disconnected from the transverserod 14 and the guy 20 disengaged from the socket Q4 and in collapsedcondition may be carriedby the supports 40 along the side of themotor-vehicle. At the same time the members 36 may be elevated so as toraise the rollers 39 out of engagement with the ground and Aheld inelevated position by means of the l pins 37'to thus not interferein anymanner 5 with the operation of -the motor vehicle.

lWhile I have 'described the'preferred effibodiments of the invention itis to be understood that I am not to be limited thereto, as changes andmodilications may be resorted to without departing from the spirit ofthe invention as defined in the appended claims.

Having thus described my invention I claim:

1. In combination with a motor vehicle having a chassis, said chassisincluding a frame having a pair of side rails, a crane mounted on theforward end of said'chassis, said crane including a pair of upstanding`bracket members secured to the siderails adjacent the forward endsthereof, one of said bracket members being secured to each of said frameside rails, a transverse member secured to said bracket members, a boomincluding a pair of rods having their lower ends detachably secured tosaid transverse member adjacent the en ds thereof, said rods convergingat 'their upper ends, a guy member having its upper end pivotallysecured to the upper ends of said rods, the lower end of said guy memberbeing secured to the vehicle adjacent the mid-portion thereof, andvertically adjustable ground engaging means associated with said bracketmembers, said means being adapted to support a portion of the weight ofthe crane and the load carried by it.

2. In combination with a motor vehicle having a, chassis, said chassisincluding a frame having a pair of side rails, a crane mounted on theforward end of said chassis, said crane including a pair of upstandingbracket members secured to the side rails adjacent the forward endsthereof, one of said bracket members being secured to each of said frameside rails, a transverse member secured to said bracket members, a pairof rods having their lower ends detachably secured to said transversemember adjacent the ends thereof, said rods converging at their upperends, a guy member having its upper end pivotally secured to the upperends of said rods, the lower end of said guy member being secured to thevehicle adjacent the mid-portion thereof, said guy member being variablein length, and vertically adjustable ground engaging means associatedwith said bracket members, said means being adapted to support a portionof the weight of the crane and the load carried by it.

3. In combination with a motor vehicle having a chassis, said chassisincluding a frame having a pair of side rails, a crane mounted at theforward end thereof, said crane including aA pair of bracket membersSecured to the forward ends of said side rails, a transverse membersecured to said bracket members. said transverse member being providedwith grooves adjacent the ends thereof, and a boom constructed of a pairof rods, said rods being slotted adjacent their lower ends,

remesa said slots being adapted to receive the grooved portions of thetransverse member.

4. In combination with a motor vehicle having a chassis, said chassisincluding a frame having a pair of side rails, a crane mounted at theforward end thereof, said crane including a pair of bracket memberssecured to the forward ends of said side members, a transverse membersecured to said bracket members, said transverse member having acircumferential groove adjacent each end, and a boom constructed of apair of rods, said rods being slotted adjacent their lower ends, saidslots beingadapted to receive Jbe grooved portions of the transversemem- 5. n combination with a motor vehicle having a chassis, saidchassis including a frame having a pair of side rails, a crane mountedat the forward end thereof, said crane including a pair of bracketmembers secured to the forward ends of the side-mem bers, a. transversemember secured to said bracket members, said transverse member having acircumferential groove adjacent each end thereof, anda boom constructedof a pair of rods, said rods having slots adjacent their lower ends,said slots being adapted to receive the grooved portions of thetransverse member, the open ends of said slots being t0- ward theforward end of the vehicle.

in testimony whereof, hereunto aix my* signature.-

NEIL P. LAR-SEN.

